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Cardiac Auscultation

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https://www.readbyqxmd.com/read/28810184/design-and-evaluation-of-a-parametric-model-for-cardiac-sounds
#1
Roilhi F Ibarra-Hernández, Miguel A Alonso-Arévalo, Alejandro Cruz-Gutiérrez, Ana L Licona-Chávez, Salvador Villarreal-Reyes
Heart sound analysis plays an important role in the auscultative diagnosis process to detect the presence of cardiovascular diseases. In this paper we propose a novel parametric heart sound model that accurately represents normal and pathological cardiac audio signals, also known as phonocardiograms (PCG). The proposed model considers that the PCG signal is formed by the sum of two parts: one of them is deterministic and the other one is stochastic. The first part contains most of the acoustic energy. This part is modeled by the Matching Pursuit (MP) algorithm, which performs an analysis-synthesis procedure to represent the PCG signal as a linear combination of elementary waveforms...
August 9, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28808515/palpitations-as-a-presenting-feature-of-multisystem-sarcoidosis
#2
Richie Manikat, Julieta Gilson, Mahesh Krishnamurthy, Koroush Khalighi
Introduction: Sarcoidosis is described as a systemic condition characterized by non-caseating granulomas in multiple organs. In this report, we present an unusual manifestation of cardiac sarcoidosis and review management strategies. Case presentation: A 29-year-old African-American man presented with weight loss, fatigue, dyspnea, palpitations, night sweats, painless left eye redness and bilateral leg pain over the course of three months. His physical exam revealed left conjunctival congestion and bilateral crackles on auscultation...
July 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28752928/retrospective-evaluation-of-and-risk-factor-analysis-for-presumed-fluid-overload-in-cats-with-urethral-obstruction-11-cases-2002-2012
#3
Cassandra J Ostroski, Kenneth J Drobatz, Erica L Reineke
OBJECTIVE: To describe patient characteristics, treatment, and outcome in male cats with urethral obstruction (UO) and fluid overload (FO), and to determine risk factors for the development of FO. DESIGN: Retrospective case-control study from 2002-2012. ANIMALS: Eleven client-owned cats with UO that developed respiratory distress secondary to suspected FO and 51 control cats with UO without FO. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Medical records of cats with UO and FO were identified...
July 28, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28687586/a-rash-with-a-heavy-heart
#4
Sergio Barros-Gomes, Niyada Naksuk, Dragan Jevremovic, Hector R Villarraga
Cardiac amyloidosis (CA) is relatively rare and frequently misdiagnosed. Other disorders presenting with increased left ventricular (LV) mass can mimic its diagnosis. This case illustrates unique findings of primary light chain (AL) amyloidosis in a patient with remarkable signs of CA. Here, we report a 49-year-old man with prior diagnosis of hypertrophy cardiomyopathy (HCM) based on an echocardiogram performed 1 year earlier that presented with 8 weeks of periorbital rash. He had numbness in the past 3 years...
July 7, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28671499/focal-intramural-pericardial-effusion-and-cardiac-tamponade-associated-with-necrotic-adipose-tissue-in-a-dog
#5
Terence A Krentz, Robert J Schutrumpf, Julie C Zitz
CASE DESCRIPTION A 1-year-old castrated male German Shepherd Dog was examined because of an acute onset of lethargy, tachypnea, and inappetence. CLINICAL FINDINGS On initial physical examination, the dog was tachypneic with muffled heart sounds on thoracic auscultation and a palpable abdominal fluid wave. Transthoracic echocardiography revealed focal intramural pericardial effusion and cardiac tamponade. TREATMENT AND OUTCOME The patient underwent emergency therapeutic pericardiocentesis, followed by right lateral intercostal thoracotomy and subtotal pericardiectomy...
July 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28661830/the-diagnostic-utility-of-computer-assisted-auscultation-for-the-early-detection-of-cardiac-murmurs-of-structural-origin-in-the-periodic-health-evaluation
#6
Pierre L Viviers, Jo-Anne H Kirby, Jeandré T Viljoen, Wayne Derman
BACKGROUND: Identification of the nature of cardiac murmurs during the periodic health evaluation (PHE) of athletes is challenging due to the difficulty in distinguishing between murmurs of physiological or structural origin. Previously, computer-assisted auscultation (CAA) has shown promise to support appropriate referrals in the nonathlete pediatric population. HYPOTHESIS: CAA has the ability to accurately detect cardiac murmurs of structural origin during a PHE in collegiate athletes...
July 2017: Sports Health
https://www.readbyqxmd.com/read/28639771/-post-myocardial-infarction-ventricular-septal-defect
#7
Florian Rey, Fabio Rigamonti, Jawad Chaara, Hajo Müller, Pascal Meier, Marco Roffi, Stéphane Noble
Post-myocardial infarction ventricular septal defect corresponds to the rupture of the ventricular septum between the healthy and infarcted parts. It is a rare complication still associated with a high mortality rate. Its diagnostic should be evoked in case of pathologic cardiac auscultation and confirmed by emergent transthoracic echocardiography. Hemodynamic stabilisation, mainly with the insertion of an intra-aortic balloon pump is the first step in the management. The subsequent modality of closure, either surgical or transcatheter, as well as the ideal timing should be discussed in the Heart team...
May 24, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28607569/huge-mass-in-right-side-of-the-heart-a-rare-case-report
#8
Reza Ghasemi, Fahimeh Ghanei-Motlagh, Susan Nazari, Mohsen Yaghubi
BACKGROUND: The presence of primary intracardiac tumors are scarce, and most of them are myxomas. We reported, in this paper, a case with huge mass in the right side of the heart. CASE REPORT: A 45-year-old man, with a complaint of bilateral lower limbs edema and exertional dyspnea, was admitted to intensive cardiac care unit. Cardiac auscultation revealed soft grade systolic murmur without any evidence of "tumor plop." Echocardiography showed a huge mobile mass in right side of the heart that suggested myxoma...
November 2016: ARYA Atherosclerosis
https://www.readbyqxmd.com/read/28468664/twenty-four-hour-ambulatory-electrocardiography-characterization-of-heart-rhythm-in-vipera-berus-envenomed-dogs
#9
Anna Rave Vestberg, Anna Tidholm, Ingrid Ljungvall
BACKGROUND: Vipera berus has a worldwide distribution and causes high morbidity in dogs annually. A complication to envenomation may be cardiac arrhythmias. The purpose of this study was to investigate the prevalence, types, and timing of arrhythmias, using 24-h ambulatory electrocardiography (24-AECG), in dogs bitten by V. berus in the first 24-32 h after envenomation. In addition, this study aimed to investigate if there were differences in selected clinical and hematological- and biochemical variables (including cardiac troponin I) at admission between V...
May 3, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28460759/utility-of-physical-examination-and-comparison-to-echocardiography-for-cardiac-diagnosis
#10
Ashish Patel, Nitin Singh Tomar, Anil Bharani
OBJECTIVE: To find out the accuracy of cardiac auscultation using non-digital stethoscope in physical diagnosis of cardiac diseases. METHODS: We enrolled 104 consecutive patients with abnormal cardiac auscultatory findings attending cardiology clinic and not previously evaluated by echocardiography. One time detailed cardiac physical examination followed by echocardiography within 1 month was undertaken. Agreement between two methods was calculated using mean pair percentage agreement, kappa statistics (κ) and calculation of 95% confidence interval (CI) for kappa statistics...
March 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28452853/diagnosing-and-managing-mitral-regurgitation
#11
Wesley Coleman, Emily Weidman-Evans, Rebecca Clawson
Mitral regurgitation is the most prevalent valvular disorder in the United States. Patient presentation varies from asymptomatic to symptoms of severe heart failure. Primary care providers often are the first to detect mitral regurgitation as a result of careful auscultation. Medical management focuses on reducing cardiac workload, combating cardiac remodeling, and treating left ventricular failure. Surgical management is reserved for severe cases.
June 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28451580/a-wireless-electronic-esophageal-stethoscope-for-continuous-monitoring-of-cardiovascular-and-respiratory-systems-during-anaesthesia
#12
H Parsaei, A Vakily, A M Shafiei
BACKGROUND: The basic requirements for monitoring anesthetized patients during surgery are assessing cardiac and respiratory function. Esophageal stethoscopes have been developed for this purpose, but these devices may not provide clear heart and lung sound due to existence of various noises in operating rooms. In addition, the stethoscope is not applicable for continues monitoring, and it is unsuitable for observing inaccessible patients in some conditions such as during CT scan. OBJECTIVE: A wireless electronic esophageal stethoscope is designed for continues auscultation of heart and lung sounds in anesthetized patients...
March 2017: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28435002/systemic-arterial-hypertension-secondary-to-chronic-kidney-disease-in-two-captive-born-large-felids
#13
A Leclerc, E Trehiou-Sechi, E M Greunz, C Damoiseaux, J Bouvard, V Chetboul
Systemic arterial hypertension (SHT) has been widely described in the domestic cat (Felis catus). In these feline patients, SHT is considered as the most common vascular disorder of middle-aged to older animals, and secondary SHT related to chronic kidney disease (CKD) represents the most common form of the disease. We describe here the first two cases of spontaneous SHT in large felids, i.e. one 18-year old, 34.4 kg, male North-Chinese leopard (Panthera pardus japonensis, case #1) and one 20-year old, 28...
April 20, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28423752/a-decision-support-system-for-cardiac-disease-diagnosis-based-on-machine-learning-methods
#14
Arash Gharehbaghi, Maria Lindén, Ankica Babic
This paper proposes a decision support system for screening pediatric cardiac disease in primary healthcare centres relying on the heart sound time series analysis. The proposed system employs our processing method which is based on the hidden Markov model for extracting appropriate information from the time series. The binary output resulting from the method is discriminative for the two classes of time series existing in our databank, corresponding to the children with heart disease and the healthy ones. A total 90 children referrals to a university hospital, constituting of 55 healthy and 35 children with congenital heart disease, were enrolled into the study after obtaining the informed consent...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28316101/n-terminal-pro-b-type-natriuretic-peptide-and-phonocardiography-in-differentiating-innocent-cardiac-murmurs-from-congenital-cardiac-anomalies-in-asymptomatic-puppies
#15
S M Marinus, H van Engelen, V Szatmári
BACKGROUND: Differentiating innocent cardiac murmurs from murmurs caused by congenital cardiac anomalies can be challenging with auscultation alone in asymptomatic puppies. HYPOTHESIS: Plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) concentrations and phonocardiograms recorded by an electronic stethoscope can differentiate innocent from pathologic cardiac murmurs. ANIMALS: A total of 186 client-owned asymptomatic dogs: 135 Cairn Terriers (age: 45-124 days), 20 adult Cairn Terriers (age: 7...
May 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28303271/a-computational-method-for-analyzing-the-biomechanics-of-arterial-bruits
#16
Chi Zhu, Jung-Hee Seo, Hani Bakhshaee, Rajat Mittal
A computational framework consisting of a one-way coupled hemodynamic-acoustic method and a wave-decomposition based postprocessing approach is developed to investigate the biomechanics of arterial bruits. This framework is then applied for studying the effect of the shear wave on the generation and propagation of bruits from a modeled stenosed artery. The blood flow in the artery is solved by an immersed boundary method (IBM) based incompressible flow solver. The sound generation and propagation in the blood volume are modeled by the linearized perturbed compressible equations, while the sound propagation through the surrounding tissue is modeled by the linear elastic wave equation...
May 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28299636/asymptomatic-heart-valve-dysfunction-in-healthy-middle-aged-companion-dogs-and-its-implications-for-cardiac-aging
#17
Silvan R Urfer, Tammi L Kaeberlein, Susan Mailheau, Philip J Bergman, Kate E Creevy, Daniel E L Promislow, Matt Kaeberlein
Heart disease is the leading cause of death in the USA, accounting for about one in every four deaths. Age is the greatest risk factor for heart disease in both people and dogs; however, heart disease is generally not considered as a major cause of morbidity or mortality in dogs. As part of the preliminary selection process for a veterinary clinical trial, 40 companion dogs with no history of cardiac pathology that were at least 6 years old and weighed at least 18 kg underwent a cardiac screening using Doppler echocardiography...
February 2017: GeroScience
https://www.readbyqxmd.com/read/28268948/teaching-cardiopulmonary-auscultation-in-workshops-using-a-virtual-patient-simulation-technology-a-pilot-study
#18
D Pereira, P Gomes, S Faria, R Cruz-Correia, M Coimbra
Auscultation is currently both a powerful screening tool, providing a cheap and quick initial assessment of a patient's clinical condition, and a hard skill to master. The teaching of auscultation in Universities is today reduced to an unsuitable number of hours. Virtual patient simulators can potentially mitigate this problem, by providing an interesting high-quality alternative to teaching with real patients or patient simulators. In this paper we evaluate the pedagogical impact of using a virtual patient simulation technology in a short workshop format for medical students, training them to detect cardiac pathologies...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227154/teaching-cardiopulmonary-auscultation-in-workshops-using-a-virtual-patient-simulation-technology-a-pilot-study
#19
D Pereira, P Gomes, S Faria, R Cruz-Correia, M Coimbra, D Pereira, P Gomes, S Faria, R Cruz-Correia, M Coimbra, P Gomes, R Cruz-Correia, S Faria, M Coimbra, D Pereira
Auscultation is currently both a powerful screening tool, providing a cheap and quick initial assessment of a patient's clinical condition, and a hard skill to master. The teaching of auscultation in Universities is today reduced to an unsuitable number of hours. Virtual patient simulators can potentially mitigate this problem, by providing an interesting high-quality alternative to teaching with real patients or patient simulators. In this paper we evaluate the pedagogical impact of using a virtual patient simulation technology in a short workshop format for medical students, training them to detect cardiac pathologies...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28150431/should-learners-reason-one-step-at-a-time-a-randomised-trial-of-two-diagnostic-scheme-designs
#20
Sarah Blissett, Deric Morrison, David McCarty, Matthew Sibbald
CONTEXT: Making a diagnosis can be difficult for learners as they must integrate multiple clinical variables. Diagnostic schemes can help learners with this complex task. A diagnostic scheme is an algorithm that organises possible diagnoses by assigning signs or symptoms (e.g. systolic murmur) to groups of similar diagnoses (e.g. aortic stenosis and aortic sclerosis) and provides distinguishing features to help discriminate between similar diagnoses (e.g. carotid pulse). The current literature does not identify whether scheme layouts should guide learners to reason one step at a time in a terminally branching scheme or weigh multiple variables simultaneously in a hybrid scheme...
April 2017: Medical Education
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